Close other documents except selected

Hello,

I find my self often focusing work on two specific files at the time in
the Netbeans IDE (I work with version 6.7.1). Usually these files are
amongst 10-15 other open documents. To focus on the two specific files
(and not ending up either closing each unneeded document, or scolling
"indefinitely" through the open documents)  it would be welcome to have
a feature allowing to close all open documents except the specific two.

Perhaps this could be implemented by an option alike:
   close all other documents except the selected documents.

The current feature "close other documents" does not do the job because
one of the files I am working on is then also closed. 

If this feature has been already implemented (in 6.8) or rejected,
please regard this post as not being sent.

Kind regards,

Tom